package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;
import java.util.logging.SimpleFormatter;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioClient minioClient;

    @Autowired
    private MinioProperties minioProperties;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {

        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());

        if (!bucketExists){
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            String policy = """
                    {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }
                    """;
            policy =policy.formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(
                    SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(policy).build()
            );
        }
        String nowDay = new SimpleDateFormat("yyyyMMdd").format(new Date());
        String objectName = nowDay + "/" + UUID.randomUUID().toString().replace("-","") + file.getOriginalFilename();
        minioClient.putObject(
                PutObjectArgs.builder().bucket(minioProperties.getBucketName()).object(objectName).stream(
                        file.getInputStream(), file.getSize(), -1
                ).contentType(file.getContentType()).build()
        );
        String url = minioProperties.getEndpoint() + "/" + minioProperties.getBucketName() + "/" + objectName;
        return url;
    }
}

